One interesting storyline could be Sakura somehow getting the Sharingan. Maybe she's involved in an experiment gone wrong that gives her the Sharingan's power. This would completely change her abilities and how she interacts with Naruto and the others.
One interesting storyline could be Naruto discovers he has Sharingan after a strange encounter with an ancient Uchiha artifact. This new power makes his enemies question his identity and alliances, and he has to struggle with the newfound power while still being true to his ninja way.
Well, in some 'naruto of the mangekyou sharingan fanfiction', there might be a plot where a character discovers a hidden power within the Mangekyou Sharingan that was previously unknown. This power could be related to time - like being able to freeze time briefly in a battle. Or perhaps a story where the wielder of the Mangekyou Sharingan has to make a difficult choice between using its power for good or succumbing to the dark temptations that often come with such a powerful ability. It could lead to an internal struggle that shapes the character's journey.
A more complex storyline might involve a time - travel plot. Naruto, Sakura, and Hinata are sent back in time and have to figure out how to get back to their own era. Along the way, they learn about the past of their village and how their predecessors' actions impact their present.
One possible storyline could be Hinata and Sakura teaming up for a difficult mission. Along the way, they face challenges that test their friendship and skills. For example, they might have to rescue Naruto from a powerful enemy. Their different fighting styles, Hinata's gentle yet powerful jutsus and Sakura's brute strength combined with her medical skills, could create an exciting dynamic in the story.
One interesting storyline could be a young ninja who discovers they have an innate ability to master the Sharingan at an extraordinary rate. They might then face challenges from jealous rivals within their own village who fear their growing power. Another could be a Sharingan master who has lost their sight due to overuse of the Sharingan but discovers a new way to 'see' through chakra perception, leading to a whole new set of adventures.
Well, in some fanfics, Sakura goes on solo adventures to discover new medical techniques. For example, she might travel to a far - off land where there are rare herbs that can enhance her healing abilities. Another storyline could be her training with a mysterious master who teaches her unique combat skills that she can use in battles.
A 'naruto with sharingan fanfic' could also involve Naruto being reincarnated as an Uchiha in a parallel universe. He has all his memories from his previous life but now has to navigate the Uchiha clan's politics and rivalries with the Sharingan. This would be a great opportunity to explore how Naruto's personality would interact with the more reserved and often power - hungry Uchiha nature, and how he would use the Sharingan to protect his new family and friends in this different world.
Well, one interesting concept could be the unique ways the Sharingan is used. Maybe the fanfic explores new jutsus or abilities related to it. For example, the author might create a situation where the Sharingan can not only copy moves but also enhance them in unexpected ways.
One interesting storyline could be Naruto using the Sharingan to copy the magic of Fairy Tail wizards. He could then combine his ninja skills with the copied magic, creating unique fighting styles. For example, he might copy Erza's requip magic and use it to quickly change his ninja tools during battle.
Another storyline could be a time - travel fanfiction. Sakura somehow travels back in time and meets a young Itachi. She tries to prevent the Uchiha massacre by working with Itachi. In this process, she might also learn more about the Uchiha clan and their secrets, which she can later use to help Naruto in their present - day battles.